Question 1 1 out of 1 points If you could pick up a single chromosome in your hand‚ what types of macromolecules would you be holding? Answer Selected Answer: e. a‚ b‚ & c Question 2 1 out of 1 points Nucleotides on a single-stranded DNA molecule are connected by: Answer Selected Answer: phosphodiester bonds Question 3 10 out of 10 points The polarity of DNA synthesis is Answer Selected Answer: 5’-->3’
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Investigation of the effect of particle size distribution on the flow properties of bulk solids Abstract This paper reports from a Defra sponsored project which aims to develop a toolkit that can be used by formulators to assist in controlling the flow properties of blended or engineered powders. This paper presents the results of an investigation into the effect of the breadth of the particle size distribution on the flow function‚ bulk density and internal friction of four food grade fillers
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sided with the aunt until her father gave in. At Cambridge‚ she studied chemistry. In 1951 she got a job as a research associate at King’s College London in the Medical Research Council’s Biophysics Unit. She was moved from working on x-ray diffraction of proteins and lipids‚ to DNA fibers. This is where she discovered on the x-ray that DNA was a double helix. In 1956 she found a lump in her abdomen. She had two tumors which ended up being ovary cancer. She continued to work while undergoing
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Classical and Quantum mechanics are the two main fields of mechanics in physics. Classical mechanics came a few hundred years before Quantum mechanics. Subsequently it is less accurate and less reliable then the more recent mechanic field of Quantum mechanics. Despite being outdated‚ Classical mechanics can still be used for many everyday problems with bigger and slower moving objects. However‚ when dealing with extremely fast moving or small subatomic particles a Classical approach will not
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the wave travels. Surface waves: a wave that travels along a surface separating two media Longitudinal waves: a wave tin which the vibration of the medium is parallel to the direction to wave travels Sound waves: longitudinal waves Diffraction: the bending of a wave as it moves around an obstacle or passes through a narrow opening Refraction: the bending of a wave as it enters a new medium at an angle.
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History Alexander Gurwitsch around 1930 Around 1923 Alexander Gurwitsch discovers an "ultraweak" photon emission from living systems (onions‚ yeast‚...)‚ since he suggested connections between photon emission and cell division rate. He calls this photonemission "mitogenetic radiation". His experiments indicate that the wavelength is in the range around 260 nm (Bibliography under Gurwisch and also Ruth (1977‚ 1979)). Around 1950: Russian scientists rediscover "ultraweak photon emission"
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Electromagnetic Spectrum 299‚792‚458 m/s – speed of light 186‚282 mile/s Speed of light = WL x Frequency C=(^)(v) Wavelength sa Electric field Band Designations: ELF- extreme low – 3-30hz SLF- super – 30-300hz ULF- ultra – 300hz-3khz VLF – very – (Vice Versa) LF – low MF – medium HF – VHF – UHF – SHF – EHF – 30-300ghz Standard Frequency JJY- japan – 40khz‚ 60khz MSF – Rugby‚England – 60khz‚5km‚3.1miles) WWVB‚ Colorado‚USA (60khz) HBG – Switzerland (75khz) DCF77 – main‚Germany (77.5khz) LORAN-
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LuYu Chen (Jessica) Ms. Cohen VA 402-1 Sep 26th 2014 Biography of Isaac Newton Isaac Newton was born on January 4th 1643 in Woolsthorpe‚ England. He was an outstanding physicist and mathematician and was credited as one of the great minds of the 17th century Scientific Revolution. Newton had accomplished on several subjects‚ such as: Math‚ Physics‚ Astronomy and so on. He was died in London on March 31th 1727. He lived for 85 years. Isaac Newton was the only son of
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Yafaa Chaudhary PHYSICS 5 NOTES Physics 5 3.5.1 Radioactivity Evidence for the nucleus Qualitative study for the Rutherford scattering. Rutherford directed a narrow beam of α-particles‚ all of the same kinetic energy‚ in an evacuated container at a thin gold film‚ in order to identify the structure of an atom: The α-particles need to be of the same kinetic energy otherwise slow α-particles would be deflected more than faster α-particles on the same initial path. The container needs to be evacuated
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alimahyar@hotmail.com Received 9 August 2010; revised and accepted 15 November 2010 SiO2-TiO2 mixed oxides have been prepared by sol-gel technique from titanium tetraisopropoxide and tetraethylorthosilicate. The prepared materials were characterized by X-ray diffraction‚ FT-IR spectroscopy‚ scanning electron microscopy‚ nitrogen physisorption and UV-vis diffuse reflectance spectroscopy. The results indicate that compared to pure TiO2‚ the SiO2-TiO2 mixed oxides show higher thermal stability‚ larger surface area
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